Physical, chemical and biological properties of the surface water that are measured continuously while the patrol boat is underway.
58 Samples taken
| Sample Date |
[i]
Enterococcus Count
Entero CountEnterococcus (“Entero”) is a fecal indicating bacterium that lives in the intestines of humans and other warm-blooded animals. It is the EPA preferred indicator for sewage contamination. |
Quality | Rain, day of (in) | Prior Day | 2 Days Prior | 3 Days Prior Rain | 4 Days Total Rain |
|---|
| Sort | Sort | Sort | Sort | Sort | Sort | Sort | Sort |
|---|---|---|---|---|---|---|---|
| 08/22/2024 | 1616 | Beach Advisory | 0.0 | 0.0 | 0.0 | 0.1 | 0.1 |
| 06/13/2024 | 166 | Beach Advisory | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| 05/16/2024 | 528 | Beach Advisory | 0.2 | 0.3 | 0.1 | 0.0 | 0.5 |
| 09/21/2023 | 158 | Beach Advisory | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| 08/24/2023 | 371 | Beach Advisory | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| 07/27/2023 | 2181 | Beach Advisory | 0.0 | 0.0 | 0.4 | 0.0 | 0.4 |
| 06/15/2023 | 3654 | Beach Advisory | 0.0 | 0.6 | 0.0 | 0.1 | 0.7 |
| 05/18/2023 | 10 | Acceptable | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| 10/20/2022 | 373 | Beach Advisory | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| 09/15/2022 | 695 | Beach Advisory | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| 08/18/2022 | 393 | Beach Advisory | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| 07/22/2022 | 1664 | Beach Advisory | 0.0 | 0.3 | 0.0 | 0.0 | 0.3 |
| 05/12/2022 | 41 | Acceptable | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| 10/21/2021 | 166 | Beach Advisory | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| 09/23/2021 | 2382 | Beach Advisory | 0.0 | 0.0 | 0.0 | 0.0 | 0.1 |
| 07/15/2021 | 3076 | Beach Advisory | 0.0 | 0.0 | 0.0 | 0.2 | 0.2 |
| 06/17/2021 | 86 | Beach Advisory | 0.0 | 0.0 | 0.0 | 0.1 | 0.1 |
| 05/20/2021 | 10 | Acceptable | 0.0 | 0.0 | 0.0 | 0.2 | 0.2 |
| 09/21/2019 | 195 | Beach Advisory | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| 07/20/2019 | 414 | Beach Advisory | 0.0 | 0.0 | 0.3 | 1.1 | 1.4 |
| 06/15/2019 | 73 | Beach Advisory | 0.0 | 0.0 | 0.7 | 0.0 | 0.7 |
| 05/18/2019 | 10 | Acceptable | 0.0 | 0.0 | 0.0 | 0.0 | 0.1 |
| 10/27/2018 | 345 | Beach Advisory | 0.3 | 0.0 | 0.0 | 0.0 | 0.3 |
| 09/15/2018 | 332 | Beach Advisory | 0.0 | 0.0 | 0.0 | 1.1 | 1.1 |
| 08/18/2018 | 17329 | Beach Advisory | 0.5 | 1.4 | 0.0 | 0.0 | 1.9 |
| 06/16/2018 | 921 | Beach Advisory | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| 05/19/2018 | 613 | Beach Advisory | 0.3 | 0.0 | 0.3 | 0.9 | 1.4 |
| 10/21/2017 | 158 | Beach Advisory | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| 09/16/2017 | 2420 | Beach Advisory | 0.0 | 0.0 | 0.4 | 0.0 | 0.4 |
| 08/19/2017 | 1414 | Beach Advisory | 0.0 | 0.4 | 0.0 | 0.0 | 0.4 |
| 07/15/2017 | 2420 | Beach Advisory | 0.0 | 0.5 | 0.4 | 0.0 | 0.8 |
| 06/17/2017 | 689 | Beach Advisory | 0.0 | 0.2 | 0.0 | 0.0 | 0.2 |
| 05/20/2017 | 64 | Beach Advisory | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| 09/10/2016 | 549 | Beach Advisory | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| 07/09/2016 | 727 | Beach Advisory | 0.0 | 0.0 | 0.4 | 0.0 | 0.4 |
| 06/11/2016 | 1733 | Beach Advisory | 0.0 | 0.0 | 0.0 | 0.3 | 0.3 |
| 05/14/2016 | 26 | Acceptable | 0.0 | 0.2 | 0.0 | 0.0 | 0.2 |
| 09/05/2015 | 24 | Acceptable | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| 08/01/2015 | 111 | Beach Advisory | 0.0 | 0.7 | 0.0 | 0.0 | 0.7 |
| 07/04/2015 | 184 | Beach Advisory | 0.0 | 0.0 | 0.0 | 0.6 | 0.6 |
| 06/06/2015 | 980 | Beach Advisory | 0.1 | 0.0 | 0.0 | 0.0 | 0.1 |
| 05/02/2015 | 10 | Acceptable | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| 09/06/2014 | 461 | Beach Advisory | 0.1 | 0.0 | 0.0 | 0.0 | 0.1 |
| 07/05/2014 | 1414 | Beach Advisory | 0.0 | 0.1 | 1.4 | 1.5 | 3.0 |
| 06/07/2014 | 70 | Beach Advisory | 0.0 | 0.0 | 0.5 | 0.2 | 0.6 |
| 05/03/2014 | 126 | Beach Advisory | 0.0 | 0.0 | 0.3 | 1.4 | 1.7 |
| 10/12/2013 | 101 | Beach Advisory | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| 09/14/2013 | 579 | Beach Advisory | 0.0 | 0.1 | 1.7 | 0.0 | 1.8 |
| 08/10/2013 | 2420 | Beach Advisory | 0.0 | 0.3 | 0.1 | 0.0 | 0.4 |
| 07/13/2013 | 1203 | Beach Advisory | 0.0 | 0.1 | 0.0 | 0.2 | 0.4 |
| 06/15/2013 | 461 | Beach Advisory | 0.0 | 0.3 | 0.7 | 0.0 | 1.0 |
| 05/04/2013 | 21 | Acceptable | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| 09/08/2012 | 238 | Beach Advisory | 1.5 | 0.0 | 0.0 | 0.5 | 2.0 |
| 08/04/2012 | 184 | Beach Advisory | 0.0 | 0.0 | 0.0 | 0.1 | 0.1 |
| 07/14/2012 | 345 | Beach Advisory | 0.1 | 0.0 | 0.0 | 0.0 | 0.1 |
| 05/12/2012 | 155 | Beach Advisory | 0.0 | 0.0 | 0.3 | 0.7 | 1.0 |
| 11/06/2011 | 59 | Acceptable | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| 06/12/2010 | 687 | Beach Advisory | 0.0 | 0.0 | 0.0 | 0.1 | 0.1 |
58 Samples taken
Enterococcus is an EPA-approved fecal contamination indicator.
Samples taken by citizen scientists trained by Riverkeeper, and processed on the Riverkeeper vessel, according to the 2014 Quality Assurance Project Plan.
Rainfall data comes from wunderground.com. Wet weather is a common trigger of fecal contamination.
Water Quality scoring is based on the 2012 Recreational Water Quality Criteria from the US Environmental Protection Agency (EPA) for safe swimming. Learn More
This site is located at the downstream end of the Sleepy Hollow Cemetery, near Route 9. Upstream of this site, the river flows through a forested buffer that is bounded by the lawns of the cemetery to the west and Douglas Park to the east.
Westchester County Dept. of Health: 914-813-5000; NYSDEC Region 3: 914-428-2505